Mit PostgreSQL-Datenbank chatten
Dies ist ein Engineering, Product, AI, IT Ops-Bereich Automatisierungsworkflow mit 11 Nodes. Hauptsächlich werden PostgresTool, Agent, ChatTrigger, LmChatOpenAi, MemoryBufferWindow und andere Nodes verwendet, kombiniert mit KI-Technologie für intelligente Automatisierung. Mit der PostgreSQL-Datenbank sprechen
- •PostgreSQL-Datenbankverbindungsdaten
- •OpenAI API Key
Verwendete Nodes (11)
{
"id": "eOUewYsEzJmQixI6",
"meta": {
"instanceId": "77c4feba8f41570ef06dc76ece9a6ded0f0d44f7f1477a64c2d71a8508c11faa",
"templateCredsSetupCompleted": true
},
"name": "Chat with Postgresql Database",
"tags": [],
"nodes": [
{
"id": "6501a54f-a68c-452d-b353-d7e871ca3780",
"name": "Bei Empfang einer Chat-Nachricht",
"type": "@n8n/n8n-nodes-langchain.chatTrigger",
"position": [
-300,
-80
],
"webhookId": "cf1de04f-3e38-426c-89f0-3bdb110a5dcf",
"parameters": {
"options": {}
},
"typeVersion": 1.1
},
{
"id": "cd32221b-2a36-408d-b57e-8115fcd810c9",
"name": "KI-Agent",
"type": "@n8n/n8n-nodes-langchain.agent",
"position": [
0,
-80
],
"parameters": {
"agent": "openAiFunctionsAgent",
"options": {
"systemMessage": "You are DB assistant. You need to run queries in DB aligned with user requests.\n\nRun custom SQL query to aggregate data and response to user. Make sure every table has schema prefix to it in sql query which you can get from `Get DB Schema and Tables List` tool.\n\nFetch all data to analyse it for response if needed.\n\n## Tools\n\n- Execute SQL query - Executes any sql query generated by AI\n- Get DB Schema and Tables List - Lists all the tables in database with its schema name\n- Get Table Definition - Gets the table definition from db using table name and schema name"
}
},
"typeVersion": 1.7
},
{
"id": "8accbeeb-7eaf-4e9e-aabc-de8ab3a0459b",
"name": "OpenAI Chat-Modell",
"type": "@n8n/n8n-nodes-langchain.lmChatOpenAi",
"position": [
-60,
160
],
"parameters": {
"model": {
"__rl": true,
"mode": "list",
"value": "gpt-4o-mini"
},
"options": {}
},
"credentials": {
"openAiApi": {
"id": "48uG61Ilo8jndw3r",
"name": "Your OpenAI Account Credentials"
}
},
"typeVersion": 1.2
},
{
"id": "11f2013f-a080-4c9e-8773-c90492e2c628",
"name": "Tabellendefinition abrufen",
"type": "n8n-nodes-base.postgresTool",
"position": [
780,
140
],
"parameters": {
"query": "select\n c.column_name,\n c.data_type,\n c.is_nullable,\n c.column_default,\n tc.constraint_type,\n ccu.table_name AS referenced_table,\n ccu.column_name AS referenced_column\nfrom\n information_schema.columns c\nLEFT join\n information_schema.key_column_usage kcu\n ON c.table_name = kcu.table_name\n AND c.column_name = kcu.column_name\nLEFT join\n information_schema.table_constraints tc\n ON kcu.constraint_name = tc.constraint_name\n AND tc.constraint_type = 'FOREIGN KEY'\nLEFT join\n information_schema.constraint_column_usage ccu\n ON tc.constraint_name = ccu.constraint_name\nwhere\n c.table_name = '{{ $fromAI(\"table_name\") }}'\n AND c.table_schema = '{{ $fromAI(\"schema_name\") }}'\norder by\n c.ordinal_position",
"options": {},
"operation": "executeQuery",
"descriptionType": "manual",
"toolDescription": "Get table definition to find all columns and types"
},
"credentials": {
"postgres": {
"id": "nGI61D0TEEZz18rr",
"name": "Your Postgresql Database Credentials"
}
},
"typeVersion": 2.5
},
{
"id": "760bc9bc-0057-4088-b3f0-3ee37b3519df",
"name": "Haftnotiz",
"type": "n8n-nodes-base.stickyNote",
"position": [
-300,
-240
],
"parameters": {
"color": 5,
"width": 560,
"height": 120,
"content": "### 👨🎤 Setup\n1. Add your **postgresql** and **OpenAI** credentials.\n2. Click **Chat** button and start asking questions to your database.\n3. Activate the workflow and you can make the chat publicly available."
},
"typeVersion": 1
},
{
"id": "0df33341-c859-4a54-b6d9-a99670e8d76d",
"name": "Chat-Verlauf",
"type": "@n8n/n8n-nodes-langchain.memoryBufferWindow",
"position": [
120,
160
],
"parameters": {},
"typeVersion": 1.3
},
{
"id": "4938b22e-f187-4ca0-b9f1-60835e823799",
"name": "Haftnotiz3",
"type": "n8n-nodes-base.stickyNote",
"position": [
360,
300
],
"parameters": {
"color": 7,
"width": 562,
"height": 156,
"content": "🛠️ Tools Used:\n1. Execute SQL Query: Used to execute any query generated by the agent.\n2. Get DB Schema and Tables List: It returns the list of all the tables with its schema name.\n3. Get Table Definition: It returns table details like column names, foreign keys and more of a particular table in a schema."
},
"typeVersion": 1
},
{
"id": "39780c78-4fbc-403e-a220-aa6a4b06df8c",
"name": "Haftnotiz1",
"type": "n8n-nodes-base.stickyNote",
"position": [
-100,
300
],
"parameters": {
"color": 7,
"width": 162,
"height": 99,
"content": "👆 You can exchange this with any other chat model of your choice."
},
"typeVersion": 1
},
{
"id": "28a5692c-5003-46cb-9a09-b7867734f446",
"name": "Haftnotiz2",
"type": "n8n-nodes-base.stickyNote",
"position": [
100,
300
],
"parameters": {
"color": 7,
"width": 162,
"height": 159,
"content": "👆 You can change how many number of messages to keep using `Context Window Length` option. It's 5 by default."
},
"typeVersion": 1
},
{
"id": "c18ced71-6330-4ba0-9c52-1bb5852b3039",
"name": "SQL Abfrage ausführen",
"type": "n8n-nodes-base.postgresTool",
"position": [
380,
140
],
"parameters": {
"query": "{{ $fromAI(\"sql_query\", \"SQL Query\") }}",
"options": {},
"operation": "executeQuery",
"descriptionType": "manual",
"toolDescription": "Get all the data from Postgres, make sure you append the tables with correct schema. Every table is associated with some schema in the database."
},
"credentials": {
"postgres": {
"id": "nGI61D0TEEZz18rr",
"name": "Your Postgresql Database Credentials"
}
},
"typeVersion": 2.5
},
{
"id": "557623c6-e499-48a6-a066-744f64f8b6f3",
"name": "Datenbankschema und Tabellenliste abrufen",
"type": "n8n-nodes-base.postgresTool",
"position": [
580,
140
],
"parameters": {
"query": "SELECT \n table_schema,\n table_name\nFROM information_schema.tables\nWHERE table_type = 'BASE TABLE'\n AND table_schema NOT IN ('pg_catalog', 'information_schema')\nORDER BY table_schema, table_name;",
"options": {},
"operation": "executeQuery",
"descriptionType": "manual",
"toolDescription": "Get list of all tables with their schema in the database"
},
"credentials": {
"postgres": {
"id": "nGI61D0TEEZz18rr",
"name": "Your Postgresql Database Credentials"
}
},
"typeVersion": 2.5
}
],
"active": false,
"pinData": {},
"settings": {
"executionOrder": "v1"
},
"versionId": "10c7c74e-b383-4ac7-8cb2-c9a15a2818fe",
"connections": {
"0df33341-c859-4a54-b6d9-a99670e8d76d": {
"ai_memory": [
[
{
"node": "cd32221b-2a36-408d-b57e-8115fcd810c9",
"type": "ai_memory",
"index": 0
}
]
]
},
"c18ced71-6330-4ba0-9c52-1bb5852b3039": {
"ai_tool": [
[
{
"node": "cd32221b-2a36-408d-b57e-8115fcd810c9",
"type": "ai_tool",
"index": 0
}
]
]
},
"8accbeeb-7eaf-4e9e-aabc-de8ab3a0459b": {
"ai_languageModel": [
[
{
"node": "cd32221b-2a36-408d-b57e-8115fcd810c9",
"type": "ai_languageModel",
"index": 0
}
]
]
},
"11f2013f-a080-4c9e-8773-c90492e2c628": {
"ai_tool": [
[
{
"node": "cd32221b-2a36-408d-b57e-8115fcd810c9",
"type": "ai_tool",
"index": 0
}
]
]
},
"6501a54f-a68c-452d-b353-d7e871ca3780": {
"main": [
[
{
"node": "cd32221b-2a36-408d-b57e-8115fcd810c9",
"type": "main",
"index": 0
}
]
]
},
"557623c6-e499-48a6-a066-744f64f8b6f3": {
"ai_tool": [
[
{
"node": "cd32221b-2a36-408d-b57e-8115fcd810c9",
"type": "ai_tool",
"index": 0
}
]
]
}
}
}Wie verwende ich diesen Workflow?
Kopieren Sie den obigen JSON-Code, erstellen Sie einen neuen Workflow in Ihrer n8n-Instanz und wählen Sie "Aus JSON importieren". Fügen Sie die Konfiguration ein und passen Sie die Anmeldedaten nach Bedarf an.
Für welche Szenarien ist dieser Workflow geeignet?
Fortgeschritten - Engineering, Produkt, Künstliche Intelligenz, IT-Betrieb
Ist es kostenpflichtig?
Dieser Workflow ist völlig kostenlos. Beachten Sie jedoch, dass Drittanbieterdienste (wie OpenAI API), die im Workflow verwendet werden, möglicherweise kostenpflichtig sind.
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